Warning: include_once(/volume1/web/constant.php): failed to open stream: Permission denied in /volume1/homes/李彥廷/www/userConstant.php on line 4

Warning: include_once(): Failed opening '/volume1/web/constant.php' for inclusion (include_path='.:/usr/share/pear') in /volume1/homes/李彥廷/www/userConstant.php on line 4

Warning: Use of undefined constant CLASS_FILE_PATH - assumed 'CLASS_FILE_PATH' (this will throw an Error in a future version of PHP) in /volume1/homes/李彥廷/www/usa/index.php on line 4

Warning: include_once(CLASS_FILE_PATH/database/DB.php): failed to open stream: No such file or directory in /volume1/homes/李彥廷/www/usa/index.php on line 4

Warning: include_once(): Failed opening 'CLASS_FILE_PATH/database/DB.php' for inclusion (include_path='.:/usr/share/pear') in /volume1/homes/李彥廷/www/usa/index.php on line 4

Fatal error: Uncaught Error: Class 'DB' not found in /volume1/homes/李彥廷/www/usa/index.php:5
Stack trace:
#0 {main}
  thrown in /volume1/homes/李彥廷/www/usa/index.php on line 5